Best stereo pairing

Hello everybody. Hoping for some recommendations on the best Bluetooth speakers to stereo pair. Currently I have 2 Bose Flex paired. Sound is great but the stereo pairing is a huge drag. I have to re-pair every time and often it’s finicky to pair them. I’m looking for something that stays paired. I’ve searched the sub and have some ideas from that, but wanted to reach out to see people’s experiences. Some ideas: Uboom L, Soundcore 300, Sony Ult 1, Klipsch Nashville. Cost is not a major factor. Priorities are sound and stereo pairing of 2 speakers that consistently stays paired. Prefer wireless Bluetooth because we move them to different rooms sometimes. Thanks all!